The current issue of Links magazine is devoted to architecture. While it may not be in depth enough for the experts it is a nice introduction to the subject. Joe Passov does an overview of architecture emphasizing variety, challenge and esthetics with the first two of most importance as the keys to good architecture. The 8th at Pebble is used as an exemplary hole to illustrate these 3 elements. In his words "the supreme question in the evaluation of any course: How soon can I come back and try this again?", or what I might call the fun factor, is hard to argue with.
There is also an article on all time best player architects by Geoff Shackelford and they are ranked (Old Tom Morris, Crenshaw, Bobby Jones, Weiskopf, Nicklaus).. Nice short summaries of the styles of: Ross, Mackenzie, Tillinghast, Thomas and MacDonald/Raynor by Tom Ferrell. Worth picking up.